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文章名     作者     期刊名     摘要     卷     期         如果没有找到您所需要的文献，请点击 ——此处申请     共76条记录   Direct Hiyama Cross-Coupling of Enaminones With Triethoxy(aryl)silanes and Dimethylphenylsilanol [作者：BI LEI; GEORG GUNDA I,期刊：Organic Letters, 页码：5413-5415 , 文章类型： Article，,卷期：2011年13-20] 2,3-Dihydropyridin-4(1H)-ones undergo direct C-H functionalization at C5 In the palladium(II)-catalyzed Hiyama reaction, using triethoxy(aryl)silanes and dimethylphenylsilanol. The reagent CuF(2) has a dual role In the r... Double Diastereocontrol in Bifunctional Thiourea Organocatalysis: Iterative Michael-Michael-Henry Sequence Regulated by the Configuration of Chiral Catalysts [作者：VARGA SZILARD; JAKAB GERGELY; DRAHOS LASZLO; HOLCZBAUER TAMES; CZUGLER MATYAS; SOOS TIBOR,期刊：Organic Letters, 页码：5416-5419 , 文章类型： Article，,卷期：2011年13-20] The importance and reactivity consequences of the double diastereocontrol in noncovalent bifunctional organocatalysis were studied. The results suggest that the bifunctional thioureas can have synthetic limitations in mu... Phosphine-Initiated General Base Catalysis: Facile Access to Benzannulated 1,3-Diheteroatom Five-Membered Rings via Double-Michael Reactions of Allenes [作者：SZETO JUDY; SRIRAMURTHY VARDHINEEDI; KWON OHYUN,期刊：Organic Letters, 页码：5420-5423 , 文章类型： Article，,卷期：2011年13-20] General base-catalyzed double-Michael reactions of allenes with various dinucleophiles are described. The reactions are facilitated most efficiently by a catalytic amount of trimethylphosphIne, affording six types of C2-... Organic Dyes Incorporating the Benzo[1,2-b:4,5-b ']dithiophene Moiety for Efficient Dye-Sensitized Solar Cells [作者：HAO XIAOLI; LIANG MAO; CHENG XIAOBING; PIAN XIAOQING; SUN ZHE; XUE SONG,期刊：Organic Letters, 页码：5424-5427 , 文章类型： Article，,卷期：2011年13-20] A new class of organic sensitizers incorporating a benzo[1,2-b:4,5-b']dithlophene (BDT) unit as conjugated spacer has been synthesized and successfully used for dye-sensitized solar cells (DSSCs). The length of the pi-co... Synthesis and Structure of Hypervalent Diacetoxybromobenzene and Aziridination of Olefins with Imino-lambda(3)-bromane Generated in Situ under Metal-Free Conditions [作者：HOQUE MD MAHBUBUL; MIYAMOTO KAZUNORI; TADA NORIHIRO; SHIRO MOTOO; OCHIAI MASAHITO,期刊：Organic Letters, 页码：5428-5431 , 文章类型： Article，,卷期：2011年13-20] Ligand exchange of p-CF(3)C(6)H(4)BrF(2) with acetoxy groups using AcOH and Ac(2)O affords (diacetoxybromo)benzene in a high yield, which undergoes azirldination of alkenes In the presence of TfNH(2) and sulfamate esters... O,O '-Disubstituted N,N '-Dihydroxynaphthalenediimides (DHNDI): First Principles Designed Organic Building Blocks for Materials Science [作者：KANTCHEV ERIC ASSEN B; HUEI SHUAN TAN; NORSTEN TYLER B; SULLIVAN MICHAEL B,期刊：Organic Letters, 页码：5432-5435 , 文章类型： Article，,卷期：2011年13-20] N,N'-Disubstituted naphthalenedlimIdes (NDIs), planar, electron-deficient building blocks, play an important role in materials and biological sciences. Naphthalene core substituents control the HOMO and LUMO energies, wh... The Revised Structure, Total Synthesis, and Absolute Configuration of Streptophenazine A [作者：YANG ZHICAI; JIN XIAOMIN; GUACIARO MICHAEL; MOLINO BRUCE F; MOCEK URSULA; REATEGUI RICARDO; RHEA JOSHUA; MORLEY TIM,期刊：Organic Letters, 页码：5436-5439 , 文章类型： Article，,卷期：2011年13-20] A total synthesis of both diastereomers of the originally proposed structure for streptophenazine A (1) has been achieved. However, both synthetic compounds are different from the natural product. Re-examination of NMR d... Staudinger-Phosphonite Reactions for the Chemoselective Transformation of Azido-Containing Peptides and Proteins [作者：VALLEE M ROBERT J; MAJKUT PAUL; WILKENING INA; WEISE CHRISTOPH; MUELLER GREGOR; HACKENBERGER CHRISTIAN P R,期刊：Organic Letters, 页码：5440-5443 , 文章类型： Article，,卷期：2011年13-20] Site-specific functionalization of proteins by bloorthogonal modification offers a convenient pathway to create, modify, and study biologically active biopolymers. In this paper the Staudinger reaction of aryl-phosphonit... Phosphine-Catalyzed Heine Reaction [作者：MARTIN ALLEN; CASTO KATHLEEN; MORRIS WILLIAM; MORGAN JEREMY B,期刊：Organic Letters, 页码：5444-5447 , 文章类型： Article，,卷期：2011年13-20] Aziridines are important synthetic Intermediates which readily undergo ring-opening reactions. It is demonstrated that electron-rich phosphines are efficient catalysts for the regioselective rearrangement of N-acylazirid... (1)H Indirect Detected (13)C Low-Abundance Single-Transition Correlation Spectroscopy (HICLASS)-(13)C Homonuclear Correlation at Natural Abundance [作者：GEORGE CHRISTY; CHANDRAKUMAR N,期刊：Organic Letters, 页码：5448-5451 , 文章类型： Article，,卷期：2011年13-20] A novel proton-detected (13)C homonuclear correlation experiment is reported at natural abundance, viz., (1)H Indirect detected (13)C Low-Abundance Single-transition correlation Spectroscopy (HICLASS). HICLASS is based o... Total Synthesis and Stereochemical Revision of Acortatarins A and B [作者：SUDHAKAR GANGARAJULA; KADAM VILAS D; BAYYA SHRUTHI; PRANITHA GAVINOLLA; JAGADEESH BHARATAM,期刊：Organic Letters, 页码：5452-5455 , 文章类型： Article，,卷期：2011年13-20] A first total synthesis of acortatarins A, B, and an enantiomer of the proposed structure of acortatarin B Is described by using readily available D-sugars. This convergent total synthesis revealed the revision of the ab... Double Arylation of Allyl Alcohol via a One-Pot Heck Arylation-Isomerization-Acylation Cascade [作者：COLBON PAUL; RUAN JIWU; PURDIE MARK; MULHOLLAND KEITH; XIAO JIANLIANG,期刊：Organic Letters, 页码：5456-5459 , 文章类型： Article，,卷期：2011年13-20] A one-pot, two-step catalytic protocol has been developed. A regloselective Heck coupling between aryl bromides and allyl alcohol leads to the generation of arylated allyl alcohols that in situ isomerize to give aldehyde... Stereoselective Rhodium-Catalyzed Amination of Alkenes [作者：LEBEL HELENE; SPITZ CEDRIC; LEOGANE OLIVIER; TRUDEL CARL; PARMENTIER MICHAEL,期刊：Organic Letters, 页码：5460-5463 , 文章类型： Article，,卷期：2011年13-20] The first stereoselective rhodium-catalyzed intermolecular aziridination and C-H amination of alkenes to produce chiral carbamate-protected aziridines and allylic amines Is described. Good yields and diastereoselectiviti... Silver-Mediated Trifluoromethylation of Arenes Using TMSCF(3) [作者：YE YINGDA; LEE SHIN HEE; SANFORD MELANIE S,期刊：Organic Letters, 页码：5464-5467 , 文章类型： Article，,卷期：2011年13-20] The silver-mediated C-H trifluoromethylation of aromatic substrates using TMSCF(3) is described. The development, optimization, and scope of these transformations are reported. AgCF(3) intermediates are proposed. Tandem Visible Light-Mediated Radical Cyclization-Divinylcyclopropane Rearrangement to Tricyclic Pyrrolidinones [作者：TUCKER JOSEPH W; STEPHENSON COREY R J,期刊：Organic Letters, 页码：5468-5471 , 文章类型： Article，,卷期：2011年13-20] Visible light promoted single electron reduction of bromocyclopropyl cyclization scaffolds enabled by photoredox catalysis initiates a novel tandem radical cyclization/sigmatropic rearrangement to generate tricyclic pyrr... pH- and Wavelength-Dependent Photodecarboxylation of Ketoprofen [作者：XU YANCHANG; CHEN XUEBO; FANG WEIHAI; PHILLIPS DAVID LEE,期刊：Organic Letters, 页码：5472-5475 , 文章类型： Article，,卷期：2011年13-20] The pH- and wavelength-dependent pathways for the photodecarboxylation of ketoprofen (KP) were mapped by CASSCF/CASPT2 computations. The decarboxylation of the basic form (KP(-)) was found to start from a long-distance c...